Soil moisture sensor with comparator module

A soil moisture sensor can read the amount of moisture present in the soil surrounding it. It’s a low tech sensor, but ideal for monitoring an urban garden, or your pet plant’s water level. This is a must have tool for a connected garden!

This sensor uses the two probes to pass current through the soil, and then it reads that resistance to get the moisture level. More water makes the soil conduct electricity more easily (less resistance), while dry soil conducts electricity poorly (more resistance).

Specification:

• Model: FC-28 (sensor HL-69)
• Supply voltage: 3-5V
• Output: Analog A0, digital D0
• Sensor cable: 20 cm
• Sensor size: 20 x 60 x 1.6 mm
• Comparator module size: 32 x 14 mm
• Nickel plated electrodes

W carry also sensor HL-69 w/o comparator module.